public class Ocean1 {
  public static void main(String[] args) {
    doSwim(new Anemonefish("尼莫"));
   doSwim(new Shark("兰尼"));
   doSwim(new Human("贾斯汀"));
   doSwim(new Submarine("黄色一号"));
   doSwim(new Piranha("比克"));
   doSwim(new Seaplane("空军零号"));
   doSwim(new FlyingFish("甚平"));
  }

  static void doSwim(Swimmer swimmer) {
    swimmer.swim();
  }
}

